LSAW Welded Steel Pipe Most submerged arc welded pipes are large diameter ones. LSAW pipe is Longitudinal Submerged Arc Welding pipe. The production technology of LSAW pipe is flexible, and it can produce specifications and models that can not be produced by high frequency steel pipe, spiral steel pipe and even seamless steel pipe. Application: LSAW pipe is mainly used for pipeline transportation, especially for the transportation of wet acid natural gas under conditions. Standard: API 5L, ASTM A53, ASTM A500, JIS G3444 Material: Q195, Q235; S195, S235; STK400 Outer Diamenter: 219-2020mm Wall thickness: 5-28mm Surface Treatment: Bare or Painted End: PE (plain end) or BE (bevelled end)